The following year, Rollén was recruited by Melker Schörling to be CEO of Hexagon, which was then a conglomerate with limited growth prospects.

[5] Under Rollén's leadership, Hexagon expanded internationally through the acquisition of Brown & Sharpe,[5] Leica Geosystems,[6] Intergraph,[7] and MSC Software[8] to become a leader in advanced measurement technology.

[10] In 2015, Rollén sold half of his shares in Hexagon to form the investment company Greenbridge Partners,[11] which as of October 2015 owned 20% of Norwegian Next Biometrics.

[15] In 2016, Rollén was accused of insider trading in Norway for buying shares in Next Biometrics in October 2015[16] on behalf of Greenbridge Partners, a transaction which did not involve Hexagon.

He was prosecuted by the Norwegian economic crime authority (Økokrim) and acquitted by The Oslo City Court in a unanimous verdict announced 10 January 2018.